how to clean a circular polarizer filter

Started May 28, 2013 | Discussions
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joemama10 Forum Member • Posts: 78
how to clean a circular polarizer filter

I tried to clean a smudge on a Marumi 67mm CP that I took on vacation. I ran some water on filter and dried it with cotton cloth after tried to dry with lens cloth paper. but it appears still smudged or not completey clear. is it possible that i got some water in between rotoating filters? is it the coating that appears not clean or clear? what is best way to clean? Thanks

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draacor
draacor Senior Member • Posts: 1,145
Re: how to clean a circular polarizer filter

i have the 77mm marumi cp filter and all i use is a lens wipe and then a microfiber cloth to dry it some more works great.  I use any lens wipe you would use for glasses.

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Tom B. Contributing Member • Posts: 928
Re: how to clean a circular polarizer filter

joemama10 wrote:

is it possible that i got some water in between rotoating filters?

I thought the same thing a few years ago but I was proven wrong. There is only one piece of glass not two. Do a test with a piece of tape on each side and rotate it.

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Tom

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Paul Atkin Regular Member • Posts: 114
Re: how to clean a circular polarizer filter

if I say - 'spit on it and rub it with an available cloth' - will you be offended? well, you get probably some oily residue from fat or other substance, so, to wash optical glass properly is a one thing, to get a lens of filter reasonably clean is the other thing.

look up at any solutions that people use to clean up regular glasses. it is usually good enough for filters. if you need to clean up an actual lens that got seriously dirty it may be trickier.

David Lal Veteran Member • Posts: 8,641
Eclipse + Pec Pads (n/t)

David

joemama10 OP Forum Member • Posts: 78
Re: Eclipse + Pec Pads (n/t)

Thanks guys. I actually just tried Monster LCD screen & camera lens cleaner with a microfiber cloth. Came pretty clean. Looks a lot better than before. I was worried I damaged the coating on lens.

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k2guy Regular Member • Posts: 439
Do Not Use Eclipse & Pec Pads

Use ROR cleaner and a micro-cloth.  The chemicals in Eclipse might affect the coatings on filters.  Spray ROR on a micro-cloth, clean in a circular motion and wipe dry with a second, clean micro-cloth.  ROR is made specifically for cleaning smudges off of lenses and filters, hence the name ROR (Residual Oil Remover).  It might seem expensive, but a little goes a long way.  Besides, why take a chance of ruining a delicate coating on a filter or lens.  Here's a link....

http://www.samys.com/p/Cleaning-Solution/VVROR2/ROR-Residual-Oil-Remover-Lens-Cleaner-2-oz.-Pump/13510.html

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David Lal Veteran Member • Posts: 8,641
Balderdash!

k2guy wrote:

Use ROR cleaner and a micro-cloth.  The chemicals in Eclipse might affect the coatings on filters.  Spray ROR on a micro-cloth, clean in a circular motion and wipe dry with a second, clean micro-cloth.  ROR is made specifically for cleaning smudges off of lenses and filters, hence the name ROR (Residual Oil Remover).  It might seem expensive, but a little goes a long way.  Besides, why take a chance of ruining a delicate coating on a filter or lens.  Here's a link....

Eclipse is specifically made for cleaning lenses and filters. In 20 years it has done no harm to any of my kit. I would not hesitate to use it even on my GBP£ 1000 Nik 300/F4.

See: http://photosol.com/product/eclipse-2-oz-bottle/

Doss Senior Member • Posts: 2,080
Re: Balderdash!

David Lal wrote:

k2guy wrote:

Use ROR cleaner and a micro-cloth.  The chemicals in Eclipse might affect the coatings on filters.  Spray ROR on a micro-cloth, clean in a circular motion and wipe dry with a second, clean micro-cloth.  ROR is made specifically for cleaning smudges off of lenses and filters, hence the name ROR (Residual Oil Remover).  It might seem expensive, but a little goes a long way.  Besides, why take a chance of ruining a delicate coating on a filter or lens.  Here's a link....

Eclipse is specifically made for cleaning lenses and filters. In 20 years it has done no harm to any of my kit. I would not hesitate to use it even on my GBP£ 1000 Nik 300/F4.

See: http://photosol.com/product/eclipse-2-oz-bottle/

Well put - Fed up of people disguising bs for knowledge.

They should ban words like 'might' 'maybe' and 'perhaps' in these gear forums.

bflood Senior Member • Posts: 1,069
Re: how to clean a circular polarizer filter

What ever you do, don't use the common isopropyl alcohol usually available inexpensively in pharmacy departments. It's only 70% alcohol and the other 30% will leave a hazy residue. If you must use alcohol, go to a full-time pharmacy and ask the pharmacist for pharmaceutical grade isopropyl. If not available, try to find a local chemical supply company and ask them for reagent grade isopropyl. Both are 99+% alcohol, and they won't leave a residue.  Both are very good at cleaning, and the recommendation to use the lens cloths is a good one.

My experience with isopropyl began with cleaning optical components of laboratory instruments, and the only caution I recommend (strongly) is to confine the use to filters and to not use it on lenses. Alcohol is much thinner than water and will get into the smallest of spaces like around the edges of lens elements, thus allowing the alcohol into the interior of a lens. I don't know of anyone who has experience trouble from this, but I see no reason to risk it.  But it works fine on my filters if (and only if) I have to use a cleaning solvent to get something off the filter.

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joemama10 OP Forum Member • Posts: 78
Re: how to clean a circular polarizer filter

Thanks. I used Monster LCD and lens cleaner with a microfiber cloth. It doesn't have alcohol.The CP filter came clean.  I appreciate the help.

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k2guy Regular Member • Posts: 439
I retract my statement

I apologize, I was thinking of PEC-12 fluid which can possibly do harm to coatings.  Regular Eclipse lens cleaning fluid is OK.  I don't know what I was thinking.  Again, I apologize.

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